/* Copyright 2013 Oleg Kostyuk <cub.uanic@gmail.com> This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include "matrix.h" #include <stdint.h> #include <stdbool.h> #include <avr/io.h> #include "wait.h" #include "action_layer.h" #include "print.h" #include "debug.h" #include "util.h" #include "sp64.h" #include "debounce.h" /* matrix state(1:on, 0:off) */ static matrix_row_t matrix[MATRIX_ROWS]; // Debouncing: store for each key the number of scans until it's eligible to // change. When scanning the matrix, ignore any changes in keys that have // already changed in the last DEBOUNCE scans. static matrix_row_t matrix_debouncing[MATRIX_ROWS]; static void matrix_select_row(uint8_t row); #ifdef RIGHT_HALF static uint8_t mcp23018_reset_loop = 0; #endif // user-defined overridable functions __attribute__((weak)) void matrix_init_kb(void) { matrix_init_user(); } __attribute__((weak)) void matrix_scan_kb(void) { matrix_scan_user(); } __attribute__((weak)) void matrix_init_user(void) {} __attribute__((weak)) void matrix_scan_user(void) {} // helper functions void matrix_init(void) { // all outputs for rows high DDRB = 0xFF; PORTB = 0xFF; // all inputs for columns DDRA = 0x00; DDRC &= ~(0x111111<<2); DDRD &= ~(1<<PIND7); // all columns are pulled-up PORTA = 0xFF; PORTC |= (0b111111<<2); PORTD |= (1<<PIND7); #ifdef RIGHT_HALF // initialize row and col mcp23018_status = init_mcp23018(); #endif // initialize matrix state: all keys off for (uint8_t row = 0; row < MATRIX_ROWS; row++) { matrix[row] = 0; matrix_debouncing[row] = 0; } debounce_init(MATRIX_ROWS); matrix_init_quantum(); } uint8_t matrix_scan(void) { #ifdef RIGHT_HALF // Then the keyboard if (mcp23018_status != I2C_STATUS_SUCCESS) { if (++mcp23018_reset_loop == 0) { // if (++mcp23018_reset_loop >= 1300) { // since mcp23018_reset_loop is 8 bit - we'll try to reset once in 255 matrix scans // this will be approx bit more frequent than once per second print("trying to reset mcp23018\n"); mcp23018_status = init_mcp23018(); if (mcp23018_status) { print("left side not responding\n"); } else { print("left side attached\n"); } } } #endif bool changed = false; for (uint8_t row = 0; row < MATRIX_ROWS; row++) { matrix_row_t cols; matrix_select_row(row); #ifndef RIGHT_HALF _delay_us(5); #endif cols = ( // cols 0..7, PORTA 0 -> 7 (~PINA) & 0xFF ); #ifdef RIGHT_HALF uint8_t data = 0x7F; // Receive the columns from right half i2c_receive(I2C_ADDR_WRITE, &data, 1, MCP23018_I2C_TIMEOUT); cols |= ((~(data) & 0x7F) << 7); #endif if (matrix_debouncing[row] != cols) { matrix_debouncing[row] = cols; //debouncing = DEBOUNCE; changed = true; } } debounce(matrix_debouncing, matrix, MATRIX_ROWS, changed); matrix_scan_quantum(); #ifdef DEBUG_MATRIX for (uint8_t c = 0; c < MATRIX_COLS; c++) for (uint8_t r = 0; r < MATRIX_ROWS; r++) if (matrix_is_on(r, c)) xprintf("r:%d c:%d \n", r, c); #endif return (uint8_t)changed; } inline matrix_row_t matrix_get_row(uint8_t row) { return matrix[row]; } void matrix_print(void) { print("\nr/c 0123456789ABCDEF\n"); for (uint8_t row = 0; row < MATRIX_ROWS; row++) { print_hex8(row); print(": "); print_bin_reverse16(matrix_get_row(row)); print("\n"); } } static void matrix_select_row(uint8_t row) { #ifdef RIGHT_HALF uint8_t txdata[3]; //Set the remote row on port A txdata[0] = GPIOA; txdata[1] = 0xFF & ~(1<<row); mcp23018_status = i2c_transmit(I2C_ADDR_WRITE, (uint8_t *)txdata, 2, MCP23018_I2C_TIMEOUT); #endif // select other half DDRB = (1 << row); PORTB = ~(1 << row); }